#include<iostream>
#include<string>
using std::string;
using std::cin;
using std::cout;
using std::endl;
int main()
{
    string s1,s2 ;
    cin>>s1>>s2;//形状如同漏斗，将输入加入到s1s2中
    cout<<s1<<s2<<endl;
    return 0;
    

}